September 21, 2026
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What price is being paid in the mineral-rich hills of eastern Democratic Republic of Congo (DRC) as the M23 armed group expands its control over some of the world’s most sought-after resources? That is the stark question at the heart of a new investigation into the group’s activities on artisanal mining sites, where fighters stand accused of a chilling pattern of abuse.

Since its resurgence in 2021, the M23 has seized large swaths of territory in eastern DRC, including the strategic mining town of Rubaya. This single site produces roughly 15% of global coltan output—a mineral essential to the electronics industry worldwide. According to United Nations experts, the armed group has imposed a levy on mineral production and trade in Rubaya, a claim the M23 has consistently rejected.

The scale of the alleged abuses

A report released this week by Amnesty International paints a harrowing picture of life under M23 control. The human rights organization says it has documented a series of grave violations on mining sites, including summary executions, torture and other ill-treatment, arbitrary detention, forced labor, and forced recruitment.

Among the most disturbing findings: information gathered on the summary execution of 18 artisanal miners. Ten of them were reportedly beaten to death, two were shot, and six were abducted and later found dead. These killings occurred in Rubaya, in North Kivu province, and at the Lomera artisanal gold mine in neighboring South Kivu province.

Voices from the pits

Miners who spoke to Amnesty International described a brutal system of control. They said they were beaten if they asked for a break, refused to hand over their ore, or disobeyed orders—even in the smallest way. More than 20 miners in Rubaya were held in underground cells, where they were reportedly struck three times a day by M23 fighters.

The testimonies collected by the organization offer a rare window into the daily reality for those extracting the minerals that feed global supply chains. The accounts suggest that violence is not an isolated phenomenon but a systematic tool used to maintain control over a lucrative trade.

A strategic chokehold on coltan

The M23’s capture of Rubaya has handed the group a significant financial lifeline. By taxing production and commerce, the armed group has inserted itself into the mineral supply chain that ultimately reaches international markets. The coltan extracted from these mines is a key component in smartphones, laptops, and other consumer electronics.

The M23 has always denied imposing such a tax, but the UN experts’ findings, combined with the testimonies gathered by Amnesty International, raise serious questions about the true cost of the minerals flowing out of eastern DRC.

What happens next?

The report adds pressure on regional and international actors to address the nexus between mineral exploitation and human rights abuses. For the miners and communities living under M23 control, the stakes could hardly be higher. Their safety, livelihoods, and dignity hang in the balance as the world debates how to respond.

As the M23 tightens its grip on eastern DRC’s mineral wealth, the question remains: will the international community act to break the cycle of violence, or will the mines of Rubaya and beyond continue to fuel a conflict that has already claimed so much?